package com.atguigu.redis.single;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
class  ShareResource{
    private int number =1;//A:1;B:2;C:3
    private Lock lock = new ReentrantLock();
    private Condition c1= lock.newCondition();
    private Condition c2= lock.newCondition();
    private Condition c3= lock.newCondition();


    //判断
    public void print5(){
        lock.lock();
        try {
            while (number!=1){
                c1.await();
            }
            //干活
            for (int i = 0; i <5 ; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知
            number =2;
            c2.signal();


        }catch (Exception e){
            e.printStackTrace();

        }finally {
            lock.unlock();

        }
    }
    public void print10(){
        lock.lock();
        try {
            while (number!=2){
                c2.await();
            }
            //干活
            for (int i = 0; i <10 ; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知
            number =3;
            c3.signal();
        }catch (Exception e){
            e.printStackTrace();

        }finally {
            lock.unlock();

        }
    }

    public void print15(){
        lock.lock();
        try {
            while (number!=3){
                c3.await();
            }
            //干活
            for (int i = 0; i <15 ; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知
            number =1;
            c1.signal();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();

        }
    }

}
public class SyncAndReentLock {
    public static void main(String[] args) {
      ShareResource shareResource  = new ShareResource();
      new Thread(()->{
          shareResource.print5();
        },String.valueOf("A")).start();
        new Thread(()->{
            shareResource.print10();
        },String.valueOf("B")).start();
        new Thread(()->{
            shareResource.print15();
        },String.valueOf("C")).start();

    }
}
